You ask Arbol's platform to quote a contract on, say, drought risk for a Texas energy operator, and the thing that strikes you first is what the workflow doesn't include. No adjuster visit. No depreciation schedule. No back-and-forth over how much of the loss was really weather. The product asks for a location, a peril, a trigger (rainfall under X millimeters across Y days), and a payout. The contract pays when the satellite says it should. That is the entire pitch, and that is also the entire bet.
Arbol, founded in 2018 by Siddhartha Jha and headquartered in New York, sells parametric insurance against climate and weather risks across agriculture, energy, maritime, and hospitality [Arbol]. In April 2024 it raised a $60 million Series B led by Giant Ventures and Opera Tech Ventures, bringing total disclosed funding to roughly $68 million [Business Insider, May 2024]. Six years in, the company is no longer just selling policies. It is underwriting them.
The wedge is the trigger
Traditional crop or business-interruption insurance is a slow, contested conversation about what the damage really was. Parametric flips that. The policy fires on a number a satellite or weather station reports, not on an inspector's judgment. For a vineyard worried about a heat dome, or a shipping line worried about a windless month, the appeal is speed and the absence of a fight at the worst possible moment.
That is not a new idea, but it is one whose addressable market has gotten larger every fire season. Arbol's platform layers pricing analytics on top of the trigger structure and pushes the workflow out to agents and brokers, with the underlying insurance written through Arbol Insurance Services, its licensed property casualty and surplus lines agency [Arbol Insurance Services].
Reinsurance is the new act
The more interesting move is at the back end of the stack. Arbol launched Arbol Underwriters Ltd. (AUL), a Bermuda-based MGU focused on parametric reinsurance [Arbol; InsurTechNews]. Going to Bermuda is the conventional path for anyone who wants to participate in the economics of the risk rather than just earn a brokerage cut on it.
It also reframes what kind of company this is. A licensed agency that distributes other carriers' paper is one business. An MGU that prices, places, and takes a share of the risk is another, with a different margin profile and a different conversation with capital partners. Arbol is now both.
The numbers the founder has put on the record
In interviews, Jha has described a steep premium ramp: $2.2 million transacted in 2020, $70 million in 2021, with the company reportedly cash flow positive that year [Arbol Medium, 2021]. The company has since cited $170 million in gross written premium for 2022 [Arbol, January 2023; Artemis.bm], and Insurance Journal reported a roughly 50% revenue increase in 2023 [Insurance Journal, 2024].
2020 | 2.2 | M USD premium
2021 | 70 | M USD premium
2022 | 170 | M USD premium
The gross written premium figures are the cleanest number to anchor on, because they come from Arbol's own underwriting disclosures rather than founder-stage retellings. Either way, the trajectory is what attracted Giant Ventures, Opera Tech, Mubadala Capital, and Finch Finance to the cap table.
A founder from the commodities desk
Jha's background is the tell. Before Arbol he was a Cross-Commodities Quantitative Strategist at Citadel, and he co-founded dClimate, a decentralized climate data ecosystem [The Org; InsureTech Connect Asia]. Parametric insurance is, underneath the policy wrapper, a commodities-pricing problem: you are writing a derivative on weather and you need both the data feed and the model to price the tail.
That lineage shows up in who the company is hiring now. The current open roles include a Backend Engineer for AI Infrastructure and a Quantitative Python Engineer alongside a Claims Examiner II for residential and commercial property [Lever]. The mix says a company building pricing models and a claims operation in parallel.
The competitive read
Arbol is not alone in this category, and the field has gotten serious. Descartes Underwriting, Floodbase, Parametrix, Skyline Partners, and Raincoat are all working some version of climate-triggered coverage, with different geographic and peril focuses.
- Distribution depth. Arbol's licensed agency footprint across all 50 states gives it a direct path to brokers that data-only competitors lack [Arbol Insurance Services].
- Risk participation. Standing up AUL in Bermuda moves Arbol from fee-for-distribution into the underwriting margin itself [Arbol].
- Data heritage. Jha's parallel role at dClimate gives the pricing engine a climate dataset relationship most pure insurtechs have to license in [InsureTech Connect Asia].
Where the wheels could come off
The honest risk is basis risk: the gap between what the trigger pays and what the customer actually lost. A vineyard can get scorched in a way the regional temperature index doesn't capture, and the policy still pays zero because the number didn't cross the line. Every parametric carrier wrestles with this, and the answer, structuring more granular triggers and educating buyers, is a slow grind rather than a product release.
The other watch item is the premium-to-revenue translation. The $170 million gross written premium figure is well sourced [Arbol, January 2023], but the revenue retellings on the founder-interview circuit are tracked at orange confidence [Frontlines.io] and have not been independently audited. A reader should read those as directional rather than definitive.
The next twelve months
The milestones to watch are concrete. Does AUL place its first reinsurance treaties at scale, and with which capacity providers. Does the Series B carry Arbol to profitability on an underwriting basis, not just on an agency-fee basis. Does the hiring pattern (AI infrastructure plus quant engineering plus a claims function) produce a noticeably tighter loss ratio in 2025.
The larger question Arbol is implicitly asking is the one the whole climate-finance category is asking: when the weather stops being background and starts being the line item, who writes the contract that makes a business willing to keep operating. Arbol's answer is that the contract should be a number on a satellite feed, not a conversation with an adjuster six months after the field is already dead.
Sources
- [Arbol] Arbol | The Future is Insured | https://www.arbol.io/
- [Arbol, April 2024] Arbol Raises $60 Million in Series B Funding | https://www.arbol.io/post/arbol-raises-60-million-in-series-b-funding-to-scale-parametric-insurance-responding-to-increasing-climate-risk
- [Arbol, January 2023] Arbol Launches Arbol Underwriters | https://www.arbol.io/post/arbol-launches-arbol-underwriters-enters-the-reinsurance-market-with-bermuda-mgu
- [Arbol Insurance Services] Arbol Insurance Services | https://insurance.arbol.io/
- [Business Insider, May 2024] Climate-focused insurtech company Arbol just raised a Series B | https://www.businessinsider.com/pitch-deck-ai-climate-insurance-startup-arbol-series-b-2024-5
- [Frontlines.io] Arbol's $171M Revenue Journey | https://frontlines.io
- [Insurance Journal, 2024] Coverage of Arbol revenue growth
- [Artemis.bm] Arbol gross written premium coverage | https://artemis.bm
- [InsurTechNews] Arbol Underwriters Ltd. launch coverage
- [InsureTech Connect Asia] Siddhartha Jha speaker profile
- [The Org] Siddhartha Jha - Founder & CEO at Arbol | https://theorg.com/org/arbol/org-chart/siddhartha-jha
- [Lever] Arbol open roles | https://jobs.lever.co/Arbol
- [Arbol Medium, 2021] Arbol year-end premium and cash flow note